【单选题】
在ATM技术中,VPI和VCI的值都发生了改变的交换属于()
A、VP交换
B、VC交换
C、VP/VC交换
D、信元交换
A、VP交换
B、VC交换
C、VP/VC交换
D、信元交换
A、vpi 1 vci 200, vpi 3 vci 400 B、vpi 1 through 3, vci 200 through 400 C、vpi 1 vci 200 through 400, vpi 3 vci 200 through 400 D、vci 1 through 3, vpi 200 through 400